diff --git a/include/kvm/virtio-net.h b/include/kvm/virtio-net.h
index 00f3220..e93e8e4 100644
--- a/include/kvm/virtio-net.h
+++ b/include/kvm/virtio-net.h
@@ -8,8 +8,12 @@ struct virtio_net_parameters {
 	const char *host_ip;
 	char guest_mac[6];
 	const char *script;
+	int mode;
 };
 
 void virtio_net__init(const struct virtio_net_parameters *params);
 
+#define NET_MODE_USER	0
+#define NET_MODE_TAP	1
+
 #endif /* KVM__VIRTIO_NET_H */
diff --git a/virtio/net.c b/virtio/net.c
index 6916af6..68967f2 100644
--- a/virtio/net.c
+++ b/virtio/net.c
@@ -63,6 +63,9 @@ struct net_device {
 
 	int				tap_fd;
 	char				tap_name[IFNAMSIZ];
+
+	int				mode;
+
 };
 
 static struct net_device ndev = {